Merewriting or signing of an acknowledgment by one partner does not necessarily of itself bind his co-partners, unless also it can be shown that he had power to bind that partnerfor the purpose of making such an acknowledgment, and in effect purported as to bind him.’’ This is in the light of sub-sec. (2) of Sce. 20 which lays down that partners are not chargeable by reason ‘‘only’’ of a written acknowledgment signed by one of themThe meaning of the word " only " in that section, in our opinion, is that the mere writing or signing of an acknowledgment by one partner does not necessarily of itself bind his co-partners, unless also it can be shown that he had power to bind that partner for the purpose of making such an acknowledgment, and in effect purported so to bind him.